EP2190383B1 - Skleralprothese mit querträgern zur behandlung von presbyopie und anderen augenerkrankungen - Google Patents

Skleralprothese mit querträgern zur behandlung von presbyopie und anderen augenerkrankungen Download PDF

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Publication number
EP2190383B1
EP2190383B1 EP08826816.4A EP08826816A EP2190383B1 EP 2190383 B1 EP2190383 B1 EP 2190383B1 EP 08826816 A EP08826816 A EP 08826816A EP 2190383 B1 EP2190383 B1 EP 2190383B1
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EP
European Patent Office
Prior art keywords
scleral
crossbar
prosthesis
scleral prosthesis
prosthesis body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP08826816.4A
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English (en)
French (fr)
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EP2190383A1 (de
Inventor
Jack C. Griffis, Iii
Mark A. Cox
Douglas C. Williamson
Peter J. Richardson
Barrie D. Soloway
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Refocus Group Inc
Original Assignee
Refocus Group Inc
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Filing date
Publication date
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Publication of EP2190383A1 publication Critical patent/EP2190383A1/de
Application granted granted Critical
Publication of EP2190383B1 publication Critical patent/EP2190383B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/14—Eye parts, e.g. lenses, corneal implants; Implanting instruments specially adapted therefor; Artificial eyes
    • A61F2/147—Implants to be inserted in the stroma for refractive correction, e.g. ring-like implants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/007—Methods or devices for eye surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0069—Three-dimensional shapes cylindrical

Definitions

  • This disclosure is directed to eye implants and more specifically to a scleral prosthesis having crossbars for treating presbyopia and other eye disorders.
  • presbyopia, glaucoma, and other eye disorders by implanting scleral prostheses within the sclera of a patient's eye.
  • scleral prostheses For each individual scleral prosthesis, an incision is made in the sclera of the patient's eye. The incision is then extended under the surface of the sclera to form a scleral "tunnel", and a scleral prosthesis is placed within the tunnel.
  • One or multiple scleral prostheses may be implanted in a patient's eye to (among other things) treat presbyopia, glaucoma, ocular hypertension, elevated intraocular pressure, macular degeneration, or other eye disorders. This technique is described more fully in the patents documents incorporated by reference above.
  • WO 00/74600 and EP 1754453 disclose a prosthesis having one or more grooves on its bottom surface.
  • the grooves allow an incision to "curve up" into the groove(s), thereby fixing the scleral prosthesis in place.
  • WO 01/17460 discloses scleral stents having various grooves used for "texturing". The texturing promotes adhesion of a stent to ocular tissue of an eye.
  • WO 02/067830 discloses a prosthesis having grooves in its bottom surface. Scleral tissue is pushed into the grooves in order to anchor the prosthesis and help prevent movement of the prosthesis.
  • WO 2004/066870 describes a scleral implant for positioning in a tunnel formed in a sclera of an eye.
  • This disclosure provides a scleral prosthesis according to claim 1, and a scleval prosthesis body for use in combination with a crossbar according to claim 11.
  • FIGURES 1A and 1B illustrate an example scleral prosthesis having crossbars in accordance with this disclosure
  • FIGURES 2A through 2C illustrate a first example body of a scleral prosthesis for receiving crossbars in accordance with this disclosure
  • FIGURES 3A through 3C illustrate a second example body of a scleral prosthesis for receiving crossbars in accordance with this disclosure
  • FIGURES 4A and 4B illustrate an example crossbar for use with a scleral prosthesis in accordance with this disclosure
  • FIGURES 5A through 5D illustrate an example surgical tool for depositing a scleral prosthesis into a scleral tunnel in accordance with this disclosure.
  • FIGURE 6 illustrates an example method for inserting a scleral prosthesis into a patient's eye.
  • FIGURES 1 through 6 discussed below, and the various embodiments used to describe the principles of the present invention in this patent document are by way of illustration only and should not be construed in any way to limit the scope of the invention. Those skilled in the art will understand that the principles of the invention may be implemented in any type of suitably arranged device or system.
  • FIGURES 1A and 1B illustrate an example scleral prosthesis 100 having crossbars in accordance with this disclosure.
  • the embodiment of the scleral prosthesis 100 shown in FIGURES 1A and 1B is for illustration only. Other embodiments of the scleral prosthesis 100 could be used without departing from the scope of this disclosure.
  • the scleral prosthesis 100 includes a body 102 having opposing ends 104-106, a top surface 108, and a bottom surface 110.
  • the top surface 108 is generally convex and reaches a peak at or near the middle of the body 102.
  • the top surface 108 includes concave portions 112 at the ends 104-106 of the body 102.
  • the bottom surface 110 is generally flat.
  • the top surface 108 and the bottom surface 110 of the body 102 could have any other suitable sizes or shapes, such as when at least a portion of the bottom surface 110 is curved.
  • the body 102 of the scleral prosthesis 100 also includes one or more notches 114 that can receive one or more crossbars 116.
  • the notches 114 represent areas of the body 102 into which the crossbars 116 can be at least partially inserted or retained.
  • the notches 114 in this example represent openings along the bottom surface 110 of the body 102 into which the crossbars 116 can be inserted.
  • the notches 114 in this example also include areas into which the crossbars 116 can be snapped or otherwise coupled, inserted, secured, or attached to the body 102.
  • the notches 114 could represent cavities or grooves that are open along the bottom surface 110 of the body 102, where the cavities or grooves are slightly smaller than the crossbars 116 at or near the bottom surface 110 of the body 102. This may allow, for example, the crossbars 116 to be snapped or otherwise forced through the narrower openings and into the larger portions of the cavities or grooves, thereby retaining the crossbars 116 within the notches 114.
  • the scleral prosthesis 100 could include a single notch 114 for receiving one or more crossbars 114 or multiple notches 114 for receiving multiple crossbars 116.
  • At least one crossbar 116 inserted into the scleral prosthesis 100 in this example is wider than at least a central portion of the prosthesis 100.
  • a crossbar 116 could be wider than a central portion of the body 102 or wider than the entire body 102.
  • Each crossbar 116 may have any suitable size and shape, such as a straight rod or a bar having wider ends.
  • each crossbar 116 has a cylindrical barbell-type shape, where a diameter of a central portion of the crossbar 116 is smaller than a diameter of the ends of the crossbar 116.
  • the crossbars 116 could have any other suitable size or shape, and different crossbars 116 could have different sizes or shapes.
  • each crossbar 116 may be inserted into the body 102 of the scleral prosthesis 100 at any suitable location.
  • the crossbars 116 are inserted into the body 102 near the ends 104-106 of the prosthesis 100.
  • the actual distance of each crossbar 116 to its closest end 104-106 could vary depending on the particular implementation.
  • Each notch 114 represents any suitable cavity, or opening, in a prosthesis body for receiving and retaining a crossbar 116.
  • Each crossbar 116 includes any suitable bar, rod, or other structure configured to be at least partially inserted into the body 102 of a scleral prosthesis 100.
  • the scleral prosthesis 100 can be implanted within a scleral tunnel in a patient's eye.
  • the body 102 of the scleral prosthesis 100 can be implanted in a scleral tunnel such that the ends 104-106 of the body 102 remain outside of the scleral tunnel.
  • the ends 104-106 of the body 102 could be relatively flat, forming flat bases that lie on the surface of the patient's eye outside of the scleral tunnel.
  • At least one crossbar 116 can be inserted into the body 102 of the scleral prosthesis 100 after the prosthesis 100 has been implanted in the scleral tunnel.
  • At least one of the crossbars 116 could be inserted into the body 102 of the scleral prosthesis 100 prior to implantation in the scleral tunnel, such as when a crossbar 116 is inserted into an end of the body 102 that will not travel through the scleral tunnel during implantation.
  • the scleral tunnel in which the body 102 of the scleral prosthesis 100 is implanted can be formed near the ciliary body of a patient's eye. Once implanted in a scleral tunnel, the scleral prosthesis 100 helps to, for example, increase the amplitude of accommodation of the patient's eye. The scleral prosthesis 100 could also help to treat other eye conditions, such as glaucoma, ocular hypertension, elevated intraocular pressure, or other eye disorders. In some embodiments, multiple prostheses (such as four) are implanted in a patient's eye, and the ends of the prostheses are "free" (not attached to the ends of other prostheses).
  • At least one crossbar 116 By making at least one crossbar 116 wider than at least a central portion of the body 102 of the scleral prosthesis 100, various benefits could be obtained, such as stabilization of the prosthesis 100. For example, with at least one wider crossbar 116, it may be less likely that the scleral prosthesis 100 would turn or rotate within a scleral tunnel after implantation. Also, at least one wider crossbar 116 may help to lock the scleral prosthesis 100 into place and impede movement of the scleral prosthesis 100. In addition, at least one wider crossbar 116 may make it less likely that the scleral prosthesis 100 can be inadvertently ejected out of the scleral tunnel after implantation. This may be particularly true when multiple crossbars 116 are wider than the scleral tunnel itself.
  • any suitable technique could be used to manufacture or fabricate the body 102 and the crossbars 116, including any of the techniques described in the above-identified patent documents.
  • the body 102 and the crossbars 116 could be formed from any suitable material or materials, including any of the materials described in the above-identified patent documents.
  • the body 102 of the scleral prosthesis 100 in FIGURES 1A and 1B may represent a single integrated piece or be formed from multiple pieces.
  • the body 102 could be formed from any suitable material or materials, such as polymethyl methacrylate (“PMMA”), polyether-ether ketone (“PEEK”), or other material(s).
  • each crossbar 116 may represent a single integrated piece or include multiple pieces and can be formed from any suitable material or materials, such as a metal.
  • the body 102 and the crossbars 116 could have any suitable size, shape, and dimensions, and prostheses 100 of different sizes, shapes, or dimensions could be provided.
  • the crossbars 116 could have an inner edge-to-inner edge distance of 3.95mm once the crossbars 116 are completely inserted into the body 102.
  • FIGURES 1A and 1B illustrate one example of a scleral prosthesis 100
  • various changes may be made to FIGURES 1A and 1B .
  • the body 102, notches 114, and/or crossbars 116 could have any other suitable size, shape, or dimensions.
  • the scleral prosthesis 100 could include any suitable number of crossbars 116, including a single crossbar 116 or more than two crossbars 116.
  • FIGURES 2A through 2C illustrate a first example body 200 of a scleral prosthesis for receiving crossbars in accordance with this disclosure.
  • the embodiment of the scleral prosthesis body 200 shown in FIGURES 2A through 2C is for illustration only. Other embodiments of the scleral prosthesis body 200 could be used without departing from the scope of this disclosure.
  • the body 200 includes two free ends 202-204, a top surface 206, a bottom surface 208, and sides 210-212.
  • the top surface 206 is generally convex with smaller concave portions near the ends 202-204.
  • the bottom surface 208 and the sides 210-212 are generally flat.
  • each of the ends 202-204 generally includes a rounded tip, which represents the transition from the flatter bottom surface 208 and the concave portion of the top surface 206.
  • each of these surfaces could have any other suitable size, shape, or dimensions, such as when the bottom surface 208 is at least partially curved.
  • the body 200 includes two notches 214, which form grooves, indentations, or other cavities within the scleral prosthesis body 200.
  • Each of the notches 214 in this example includes a relatively narrower opening portion 216 and a relatively wider retaining portion 218.
  • the opening portion 216 represents the part of the notch 214 that is open along the bottom surface 208 of the body 200.
  • the retaining portion 218 represents the part of the notch 214 that is accessible through the opening portion 216.
  • the opening portion 216 may be somewhat smaller than the crossbar that is inserted into the notch 214, while the retaining portion 218 may approximately match or be somewhat larger than the crossbar that is inserted into the notch 214. This allows the crossbar to be snapped into or otherwise placed within the notch 214, while reducing the chances that the crossbar could inadvertently leave or be ejected from the notch 214.
  • crossbars 116 could be inserted into and retained in the notches 214.
  • Any other suitable technique could be used to secure or retain a crossbar within a notch 214.
  • Other techniques could include using an adhesive, a suture, male and female or other interlocking parts, or any other suitable mechanical or other attachment or coupling mechanism.
  • the notches 214 could be sized to receive the crossbars, and pressure from a patient's eye on the crossbars could maintain the crossbars within the notches 214.
  • each notch 214 is generally arranged perpendicular to the bottom surface 208 of the body 200.
  • the notches 214 could have any other suitable arrangement.
  • the opening portion 216 of each notch 214 could be located closer to a central portion of the body 200 than its associated retaining portion 218.
  • each notch 214 is generally configured to receive a barbell-type crossbar, where ends of each notch 214 (located along the sides 210-212) are wider than a middle portion of the each 214. This is for illustration only. Notches 214 having other or additional shapes could also be used in the body 200.
  • each end 202-204 of the body 200 could be angled or include a small groove 220 in its top surface 206.
  • the groove 220 represents a portion of the top surface 206 that is generally angled inward and downward.
  • the groove 220 could be used to facilitate pushing or pulling the body 200 into a scleral tunnel during implantation.
  • the body 200 could have any suitable dimensions.
  • the body 200 could be 5.4mm long (measured end 202 to end 204), 1.38mm wide (measured side 210 to side 212), and 0.93mm tall at its peak (measured top 206 to bottom 208).
  • the top surface 206 could have a radius of curvature of 9.0mm.
  • the notches 214 could have a center-to-center distance of 4.4mm, and the distance from each notch's center to the nearest end 202 or 204 could equal 0.5mm.
  • Each of the notches 214 could have a width (measured side 210 to side 212) of 1.38mm.
  • each notch 214 could have a diameter of 0.4mm, and the ends of each notch 214 could have a diameter of 0.45mm.
  • the ends of each notch 214 may be 0.2mm in width (measured side 210 to side 212). These dimensions are for illustration only.
  • FIGURES 2A through 2C illustrate one example of a body 200 of a scleral prosthesis for receiving crossbars
  • the body 200 and notches 214 could each have any other suitable size, shape, or dimensions.
  • the body 200 could include any suitable number of notches 214, including a single notch 214 or more than two notches 214.
  • FIGURES 3A through 3C illustrate a second example body 300 of a scleral prosthesis for receiving crossbars in accordance with this disclosure.
  • the embodiment of the scleral prosthesis body 300 shown in FIGURES 3A through 3C is for illustration only. Other embodiments of the scleral prosthesis body 300 could be used without departing from the scope of this disclosure.
  • the scleral prosthesis body 300 is similar in size and shape to the scleral prosthesis body 200 of FIGURES 2A through 2C .
  • ends 302-304 of the body 300 are generally more rounded than the ends 202-204 of the body 200.
  • the ends 302-304 of the body 300 also lack notches 220 or similar inward surface structures.
  • a top surface 306 of the body 300 has a larger radius of curvature than the top surface 206, and the top surface 306 is generally steeper at the ends 302-304 when compared to the top surface 206.
  • the body 300 is otherwise the same as or similar to the body 200.
  • the body 300 includes two notches 314, which form grooves, indentations, or other cavities within the body 300.
  • Each of the notches 314 can receive and retain a crossbar associated with a scleral prosthesis.
  • Each notch 314 in this example, by its shape, can retain a crossbar within the body 300.
  • the notches 314 could have the same or similar shape or arrangement as shown in FIGURES 1A and 1B .
  • each notch 314 in this example is generally configured to receive a barbell-type crossbar, notches 314 having other or additional shapes could also be used in the body 300.
  • the body 300 could have any suitable dimensions.
  • the body 300 could be 5.9mm long, 1.38mm wide, and 0.93mm tall at its peak.
  • the top surface 306 could have a radius of curvature of 20.0mm.
  • the notches 314 could have a center-to-center distance of 4.4mm, and the distance from each notch's center to the nearest end 302 or 304 could equal 0.75mm.
  • a distance between (i) a line tangent to the top of a notch 314 and (ii) the top surface 306 could equal 0.37mm.
  • a distance between (i) the slanted surface at an end of the body 300 and (ii) a line parallel to the slanted surface and tangent to the notch 314 could also equal 0.37mm.
  • Each of the notches 314 could have a width of 1.38mm.
  • the central portion of each notch 314 could have a diameter of 0.4mm, and the ends of each notch 314 could have a diameter of 0.45mm.
  • the ends of each notch 314 may each be 0.2mm in width.
  • FIGURES 3A through 3C illustrate another example of a body 300 of a scleral prosthesis for receiving crossbars
  • the body 300 and notches 314 could each have any other suitable size, shape, or dimensions.
  • the body 300 could include any suitable number of notches 314, including a single notch 314, or more than two notches.
  • FIGURES 4A and 4B illustrate an example crossbar 400 for use with a scleral prosthesis in accordance with this disclosure.
  • the embodiment of the crossbar 400 shown in FIGURES 4A and 4B is for illustration only. Other embodiments of the crossbar 400 could be used without departing from the scope of this disclosure.
  • the crossbar 400 includes a central portion 402 and end portions 404.
  • the central portion 402 has a cylindrical shape with a circular or substantially circular cross section.
  • the end portions 404 also have cylindrical shapes with circular or substantially circular cross sections.
  • the central portion 402 has a smaller diameter or cross sectional area than each of the end portions 404.
  • the central portion 402 could have a diameter of 0.4mm, and the end portions 404 could each have a diameter of 0.45mm.
  • the central portion 402 could be 1.05mm in length (measured end-to-end), and each end portion 404 could be at least 0.2mm in length. As shown in FIGURES 2C and 3C , this completely fills a notch in a prosthesis body.
  • One end portion 404 can have an additional length (denoted X1), and the other end portion 404 can have an additional length (denoted X2).
  • X1 and X2 both equal 0.5mm, giving each end portion 404 a total length of 0.7mm.
  • X1 equals 0.0mm and X2 equals 1.0mm, giving the end portions 404 a total length of 0.2mm and 1.2mm, respectively.
  • FIGURES 4A and 4B illustrate an example crossbar 400 for use with a scleral prosthesis
  • the crossbar 400 could have any other suitable size, shape, or dimensions.
  • the crossbar 400 could include any number of sections or portions having a different diameter or cross sectional area, including none or more than two.
  • FIGURES 5A through 5D illustrate an example surgical tool 500 for depositing a scleral prosthesis into a scleral tunnel.
  • the example of the surgical tool 500 shown in FIGURES 5A through 5D is for illustration only. Other examples of the surgical tool 500 could be used.
  • the surgical tool 500 includes a central portion 502, a cutting blade 504, and hub arms 506a-506b.
  • the central portion 502 can be rotated in multiple directions to move the cutting blade 504 into and out of the scleral tissue of a patient's eye.
  • the hub arms 506a-506b couple the central portion 502 to the cutting blade 504, helping to translate rotation of the central portion 502 into movement of the cutting blade 504.
  • a body 508 of a scleral prosthesis is engaged with the tail end of the cutting blade 504.
  • the body 508 could represent any suitable prosthesis body, such as any of the prosthesis bodies described above.
  • the cutting blade 504 is initially rotated through the scleral tissue of a patient's eye using the hub arm 506b.
  • the hub arm 506a engages with the tip of the cutting blade 504, and the hub arm 506b disengages from the cutting blade 504.
  • the hub arm 506a then continues to rotate the cutting blade 504 through the scleral tissue and out of the newly formed scleral tunnel.
  • the scleral prosthesis body 508 is pulled into the scleral tunnel upside-down by the cutting blade 504 and then disengages from the cutting blade 504.
  • the prosthesis body 508 can then be rotated to properly position the prosthesis body 508 in the newly-formed scleral tunnel.
  • one or more crossbars can be inserted into or coupled or attached to the body 508, forming a completed scleral prosthesis.
  • FIGURES 5A through 5D The technique shown in FIGURES 5A through 5D is for illustration only. Any other suitable technique could be used to implant a scleral prosthesis into a scleral tunnel.
  • the surgical tool 500 could include a single hub arm, and the surgical tool 500 could rotate the cutting blade 504 into scleral tissue and then out of the scleral tissue to form a scleral tunnel.
  • the prosthesis body 508 could then be inserted into the scleral tunnel using any other suitable tool or technique.
  • FIGURES 5A through 5D illustrate an example surgical tool 500 for depositing a scleral prosthesis into a scleral tunnel
  • various changes may be made to FIGURES 5A through 5D .
  • any other suitable technique could be used to form a scleral tunnel in a patient's eye.
  • the formation of the scleral tunnel may or may not include the simultaneous or near-simultaneous implantation of a scleral prosthesis body into the scleral tunnel.
  • FIGURE 6 illustrates an example method 600 for inserting a scleral prosthesis into a patient's eye.
  • the example of the method 600 shown in FIGURE 6 is for illustration only. Other methods 600 could be used.
  • a scleral tunnel is formed in the scleral tissue of a patient's eye at step 602. This could include, for example, using a curved cutting blade to form the scleral tunnel. Examples of surgical tools for forming scleral tunnels are described above and in the above-incorporated patent documents. Any other suitable tool or technique could be used to form any suitable scleral tunnel in scleral tissue.
  • a body of the scleral prosthesis is inserted into the scleral tunnel at step 604. This could include, for example, inserting the prosthesis body into the scleral tunnel while the scleral tunnel is being formed. This could also include inserting the prosthesis body into the scleral tunnel after formation of the scleral tunnel.
  • a first crossbar is inserted into a first end of the scleral prosthesis body at step 606.
  • the crossbar 116 could be snapped into the notch 114 or otherwise secured or attached to the scleral prosthesis body.
  • the crossbar 116 could also be forced into the notch 114 without actually being secured in the notch 114, such as when pressure from the patient's eye holds the crossbar 116 in the notch 114.
  • the central portion of the crossbar 116 may or may not be completely within the body of the scleral prosthesis. For instance, a portion of the crossbar 116 could partially reside outside of the body 102 or extend out of the bottom surface 108 of the body 102.
  • a second crossbar is inserted into a second end of the scleral prosthesis body at step 608. This could include, for example, inserting another crossbar 116 into another notch 114 in the scleral prosthesis body 102. Depending on the implementation, the second crossbar 116 may or may not be inserted into the body 102 of the prosthesis in the same way as the first crossbar 116. Also, the first and second crossbars 116 could be identical, or they could differ in size, shape, or dimensions.
  • FIGURE 6 illustrates one example of a method 600 for inserting a scleral prosthesis into a patient's eye
  • various changes may be made to FIGURE 6 .
  • steps 602-604 could overlap when a surgical tool is used to form a scleral tunnel and insert a scleral prosthesis body.
  • the scleral prosthesis could include one or more than two crossbars.
  • one of the crossbars could be inserted into the scleral prosthesis body before the prosthesis body is inserted into a patient's eye.

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  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Cardiology (AREA)
  • Transplantation (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Surgery (AREA)
  • Prostheses (AREA)

Claims (17)

  1. Eine Skleralprothese, die folgendes umfasst:
    einen Prothesekörper (102, 200, 300), bestehend aus:
    ersten und zweiten Seitenflächen (210-212); und
    einem Hohlraum, der sich durch den Prothesekörper von der ersten Seitenfläche zur zweiten Seitenfläche erstreckt; und
    einem Querträger (116, 400), der darauf ausgelegt ist, in den Hohlraum eingefügt zu werden, wobei der Querträger breiter ist als der Prothesekörper;
    dadurch gekennzeichnet, dass der Hohlraum einen Öffnungsbereich (216) entlang einer Unterseite (110, 208) des Prothesekörpers umfasst, durch den der Querträger eingesetzt wird.
  2. Die Skleralprothese nach Anspruch 1, wobei der Hohlraum folgendes umfasst:
    einen Zurückhaltungsbereich (218) innerhalb des Prothesekörpers;
    wobei der Zurückhaltungsbereich den Querträger aufnimmt, wenn der Querträger durch die Öffnung eingesetzt wird; und
    wobei der Öffnungsbereich schmaler ist als der Zurückhaltungsbereich.
  3. Die Skleralprothese nach Anspruch 2, wobei der Öffnungsbereich und der Zurückhaltungsbereich entlang einer Linie senkrecht zur Unterseite des Prothesekörpers ausgerichtet sind.
  4. Die Skleralprothese nach Anspruch 2, wobei:
    der Hohlraum eine schmalere mittlere Öffnung und breitere Endöffnungen abgrenzt; und
    der Querträger einen schmaleren mittleren Bereich (402) und breitere Endbereiche (404) hat.
  5. Die Skleralprothese nach Anspruch 4, wobei die breiteren Endbereiche des Querträgers unterschiedlich lang sind.
  6. Die Skleralprothese nach Anspruch 1, wobei:
    der Prothesekörper mehrere Hohlräume (114, 214, 314) umfasst; und
    die Skleralprothese mehrere Querträger (116, 400) umfasst, die darauf ausgelegt sind, in die Hohlräume eingesetzt zu werden.
  7. Die Skleralprothese nach Anspruch 6, worin alle Hohlräume in der Nähe eines Endes (104-106, 202-204, 302-304) des Prothesekörpers angeordnet sind.
  8. Die Skleralprothese nach Anspruch 1, wobei:
    eine Unterseite (110, 208) des Prothesekörpers flach ist und eine Oberseite (108, 206, 306) des Prothesekörpers gekrümmt ist.
  9. Die Skleralprothese nach Anspruch 1, wobei mindestens ein Ende (104-106, 202-204, 302-304) des Prothesekörpers eine schräg nach innen und nach unten zu einer Unterseite (110, 208) des Prothesekörpers gerichtete Nut (220) umfasst.
  10. Die Skleralprothese nach Anspruch 1, wobei der Querträger im Wesentlichen gerade ist und einen zylindrischen Querschnitt aufweist.
  11. Ein Skleralprothese-Körper für die Verwendung in Verbindung mit einem Querträger (116, 400), wobei der besagte Skleralprothese-Körper folgendes umfasst:
    erste und zweite freie Enden (104-106, 202-204, 302-304);
    erste und zweite Seitenflächen (210-212); und
    einen Hohlraum (114, 214, 314), der sich durch den Skleralprothese-Körper von der ersten Seitenfläche zur zweiten Seitenfläche erstreckt, wobei der Hohlraum so ausgelegt ist, dass er den besagten, durch den Hohlraum eingesetzten Querträger (116, 400) aufnimmt, dadurch gekennzeichnet, dass der Hohlraum folgendes umfasst:
    einen Öffnungsbereich (216) entlang einer Unterseite des Prothesenkörpers; und
    einen Zurückhaltungsbereich (218) innerhalb des Prothesekörpers;
    wobei der Zurückhaltungsbereich so ausgelegt ist, dass er den Querträger aufnimmt, wenn der Querträger durch den Öffnungsbereich eingesetzt wird; und
    wobei der Öffnungsbereich schmaler als der Zurückhaltungsbereich ist und so ausgelegt ist, dass er den Querträger im Zurückhaltungsbereich zurückhält.
  12. Der Skleralprothese-Körper nach Anspruch 11, wobei der Öffnungsbereich und der Zurückhaltungsbereich entlang einer Linie, senkrecht zur Unterseite des Prothesekörpers, ausgerichtet sind.
  13. Der Skleralprothese-Körper nach Anspruch 11, wobei der Hohlraum eine schmalere mittlere Öffnung und breitere Endöffnungen abgrenzt.
  14. Der Skleralprothese-Körper nach Anspruch 13, wobei die breiteren Endöffnungen des Hohlraums unterschiedlich lang sind.
  15. Der Skleralprothese-Körper nach Anspruch 11, wobei der Prothesekörper mehrere Hohlräume (114, 214, 314) umfasst, die darauf ausgelegt sind, mehrere Querträger (116, 400) aufzunehmen.
  16. Der Skleralprothese-Körper nach Anspruch 15, wobei alle Hohlräume in der Nähe eines der Enden des Skleralprothese-Körpers angeordnet sind.
  17. Der Skleralprothese-Körper nach Anspruch 11, wobei mindestens ein Ende des Skleralprothese-Körpers eine schräg nach innen und nach unten zu einer Unterseite des Skleralprothese-Körpers gerichtete Nut (220) umfasst.
EP08826816.4A 2007-08-02 2008-07-31 Skleralprothese mit querträgern zur behandlung von presbyopie und anderen augenerkrankungen Not-in-force EP2190383B1 (de)

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Application Number Priority Date Filing Date Title
US96307307P 2007-08-02 2007-08-02
PCT/US2008/071750 WO2009018440A1 (en) 2007-08-02 2008-07-31 Scleral prosthesis having crossbars for treating presbyopia and other eye disorders

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EP2190383A1 EP2190383A1 (de) 2010-06-02
EP2190383B1 true EP2190383B1 (de) 2014-10-29

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TW200916070A (en) 2009-04-16
WO2009018440A1 (en) 2009-02-05
CA2706135C (en) 2014-10-21
AU2008282181B2 (en) 2014-01-16
AR068802A1 (es) 2009-12-09
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EP2190383A1 (de) 2010-06-02
KR20100044837A (ko) 2010-04-30
CA2706135A1 (en) 2009-02-05
US20090099654A1 (en) 2009-04-16
ES2523681T3 (es) 2014-11-28
AU2008282181A1 (en) 2009-02-05
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US7927372B2 (en) 2011-04-19
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